/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.cmd;

import com.je.bpm.engine.ActivitiIllegalArgumentException;
import com.je.bpm.engine.ActivitiObjectNotFoundException;
import com.je.bpm.engine.history.HistoricIdentityLink;
import com.je.bpm.engine.history.HistoricTaskInstance;
import com.je.bpm.engine.impl.interceptor.Command;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.HistoricIdentityLinkEntity;
import com.je.bpm.engine.impl.persistence.entity.HistoricTaskInstanceEntity;
import com.je.bpm.engine.task.IdentityLinkType;

import java.io.Serializable;
import java.util.List;

/**
 *
 */
public class GetHistoricIdentityLinksForTaskCmd implements Command<List<HistoricIdentityLink>>, Serializable {

    private static final long serialVersionUID = 1L;
    protected String taskId;
    protected String processInstanceId;

    public GetHistoricIdentityLinksForTaskCmd(String taskId, String processInstanceId) {
        if (taskId == null && processInstanceId == null) {
            throw new ActivitiIllegalArgumentException("taskId or processInstanceId is required");
        }
        this.taskId = taskId;
        this.processInstanceId = processInstanceId;
    }

    @Override
    public List<HistoricIdentityLink> execute(CommandContext commandContext) {
        if (taskId != null) {
            return getLinksForTask(commandContext);
        } else {
            return getLinksForProcessInstance(commandContext);
        }
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    protected List<HistoricIdentityLink> getLinksForTask(CommandContext commandContext) {
        HistoricTaskInstanceEntity task = commandContext.getHistoricTaskInstanceEntityManager().findById(taskId);

        if (task == null) {
            throw new ActivitiObjectNotFoundException("No historic task exists with the given id: " + taskId, HistoricTaskInstance.class);
        }

        List<HistoricIdentityLink> identityLinks = (List) commandContext.getHistoricIdentityLinkEntityManager().findHistoricIdentityLinksByTaskId(taskId);

        // Similar to GetIdentityLinksForTask, return assignee and owner as
        // identity link
        if (task.getAssignee() != null) {
            HistoricIdentityLinkEntity identityLink = commandContext.getHistoricIdentityLinkEntityManager().create();
            identityLink.setUserId(task.getAssignee());
            identityLink.setTaskId(task.getId());
            identityLink.setType(IdentityLinkType.ASSIGNEE);
            identityLinks.add(identityLink);
        }
        if (task.getOwner() != null) {
            HistoricIdentityLinkEntity identityLink = commandContext.getHistoricIdentityLinkEntityManager().create();
            identityLink.setTaskId(task.getId());
            identityLink.setUserId(task.getOwner());
            identityLink.setType(IdentityLinkType.OWNER);
            identityLinks.add(identityLink);
        }

        return identityLinks;
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    protected List<HistoricIdentityLink> getLinksForProcessInstance(CommandContext commandContext) {
        return (List) commandContext.getHistoricIdentityLinkEntityManager().findHistoricIdentityLinksByProcessInstanceId(processInstanceId);
    }

}
